Re: [PATCH 1/5] power: vexpress: add suppress_bind_attrs to true

From: Arnd Bergmann
Date: Thu May 28 2020 - 06:26:17 EST


On Wed, May 27, 2020 at 3:27 PM Rob Herring <robh@xxxxxxxxxx> wrote:
>
> On Wed, May 27, 2020 at 5:26 AM Anders Roxell <anders.roxell@xxxxxxxxxx> wrote:
> >
> > Make sure that the POWER_RESET_VEXPRESS driver won't have bind/unbind
> > attributes available via the sysfs, so lets be explicit here and use
> > ".suppress_bind_attrs = true" to prevent userspace from doing something
> > silly.
>
> This doesn't really make sense if we're going to make this a module.
> Module unloading and unbind introduce the same requirements of
> cleaning up (undoing whatever probe did).

I still want this change as a separate patch so we can backport it to stable
kernels for correctness.

Also, as long as we don't have a working (and tested) .remove callback,
we can only allow making the driver a loadable module but not also
allowing the module to be removed.

Arnd